Overload-clutch.



f www@ E' P. GLOSHx OVERLOAD CLUTCH.

APPLIOATION FILED 111cm, 1911,

Patented July 3G, 1,912

2 SHBBTSHEET 1.

F. P. GLOSH. OVERLOAD CLUTCH.

APPLICATION FILED AUG. 5, 1911.

atentei/Juy 30, 1912.

` 2 SHEETSAHEET a FBDERICK'P. GLOSH, OFZCLEVELAND, OHIO, ASSIC'NOIlCiv TO THE NATIONAL-ACME MANUFACTURING COMPANY, F CLEVELAND, OHIO, A CORPORATION OF OHIO.

All

ovnRLoAn-CLUTCH.

Specication of Letters Patent.

Patented July so, 191e.

Application and August 5, 1911.(.sw1arnce42sss- Y cation.

This invention relates to"clutches,the object of the invention being to provide an im- 'proved clutch in which the driving and driven members will be disconnected when an abnormal strain or `overload-is placed on the mechanism in connection with which the clutch is used, thereby'to prevent breakage of such mechanism, and which I:clutch ,will therefore be'designated herein as an' over'- load clutch, one of the objects being t-o provide a clutch of -this `character comparaltively simple in construction and effective 1n use.

'In the drawings accompanying and form'- ing part of this specification, Figure 1 is a sectional 'view of this'improved clutch; Fig, 2 is a left-hand endI view thereof; Fig. 3 is a detail view, partly in section,-illustrating the -clutch end of the clutch; Fig. 4 is a perspective" view of this improved clutch n an'd Fig. 5 'is an end view, part-ly in section, 'of the drivingv and driven gears actuated by thel clutch; v

Similar characters of reference indicate` corresponding parts throughoutthe figures of the drawings. 4

On' the shaft 2, which is suitably supported in any desired manner, is fitted to run freely a clutch sleeve 3 'having on its enlarged front end the yusual clutch teeth 4. On this sleeve' 3 is fittedl to run freely a driving pulley 5, on the hubG of whichv is fittedI to run loosely a pulley 7 and which constitutes the idle pulley. ofthe mechanism and uponwhich the beltl may be shifted in any suit-able` mannerv when-the machine is running idle. This pulley 7, vas well as the driving'v pulley A5, is secured 1n position a ainst endwise mvement by aI collar 8 fastened to a shoulder of the-clutch sleeve 3 and which engages the hubs of the two pulleys, the opposite 'face of the driving pulley 5- being held a ainst a shoulder 9 of the clutch sleeve 3 byl this collar 8. Fastened to the face of the driving pulley 5 is a disk 10 having on the center line of`the face.tl`1ereof\ two extended bearings 11, in which are.

ate with the clutch teeth 4 of the clutch.

sleeve This clutch member has4 its hub 17 provided with a pair of depressions 18, each at the end of a cam portion 19 machined on the periphery of this clutch member 15. The collar8`is connected by a pair of 'driving pins 20 and 21 with a pair of,-

gears 22 and 23 rotatably supported by a `suitable bushing 24 which extends through the bore of the clutch member 3, and .these gears in turn mesh with another pair Iof` gears 25 and 26 suitably supported by a stub shaft 27, and which train of gears thu's' receives motion from the driven clutch mem- Yber 3, to which the collar is fastened. It

will, of course, be understood, thatV this' driven clutch member 3 may be utilized to im- 1 .partmotion to apulley or to other means instead of the train of gears shown. 4

lIn operation, motion being imparted to belt, not shown, and the driving and driven clutch teeth 16 and 4 of the members 15 andI '53 being in engagement and the pins 12 projecting into the depressions -18 of the drivthe driving pulley 5 by means of a suit-able' ing clutch member 15, it'willbe observed that motion is imparted from 'the driven clutch member'to the train` of gears by meansd of the collar 8 and the pins connecting the same with a pair of the gears. When, however, there is afbreaking strain on the driven portions of the* machine, as`

for instance the gears inthe present instance, the clutch member 15 1s forced outlof connection with the clutch member 3, owing to the cam portions 19 on the clutch member 15;`

that is to say, the inclined surfaces of the cam portions ride againstthe spring actuated pins or plungers 12 andsoforc'e the driving clutch member 15 away from the driven clutch member 3 and thus disconnect r the two. clutch members and so permitthe driving pulley 5 to run idle. In -the end of to shaft 2, with its inner end engaging the 'the sleeve 14 fastened to the shaft 2 is a 'notch or .recess 30. This sleeve 14 being fastv thrust'washer 14 prevents the mechanism up a machine in which this overload clutch is a part, or time its movements, it is often' '-ffro'm slipping off the shaft. In order farisei?V is done by means et a crank being slipped on the end of the shaft 2, said crank, having lugs or proyeetions on its hub which Coineide with the slot. 30 in the sleeve 1+i. Fronr this it will be seen that by turning the crank the shaft 2 will be turned direct, and not 'through the train. oif gea-rs 22, 9,3, 25 and QG, 'and this operation can be performed Whether the clutches 15. and 8 arein connection or not. When the clutch member l5 has been thrown out of Connection witl'i tbe clutch member 3 by means of the spiral cam groove. 19 berembefore described it will have moved outward on sleeve le, shown in dotted lines in Fig. and against the shoulder of said sleeve. Since the `teeth of clutches l5 and 3 are then no longer in connection the `ionll'ey 5 Will revolve loose on the hub ol' clutch member 3, so that the pins l2 will ride free on crutch 15, and since the earn faces 19 have theirs iral in the same diree- `tion that the pulley must rotate it follows that velnmh l5 will remain in the position into which it has been ooed by the pins l2, yor, in other Words, against the shoulder of thel sleeve 14. l

The resetting of the clutch 15 is best aeeomplished by shifting the belt to loose pnlley 7, iv'nien is mounted on the hub of pulley Having thus stopped the rotation ot pulley 5, which has on its outer iaoe the disk l0 carrying the pins 1Q, it .is obvious that by turning the clutch l5, (Which is :tree to turn on sleeve 14C in any direction), until the entrances of cam recesses 1 \are.opposite the pins l2 a slight shove by the hand vvill again place the pins l2 and clutch membersnl and 3 in connection. l

lltromI the foregoing it Will be observed that the driving pulley 5, through the me dium of the spring actuated pins l2, rotates the driving clutch-member 'l5 so long as the ends of the pins project properly into the depressions of the driving clutch member, at which time the oluteh .teeth of the driving clutch member Will engage the teeth oitl the driven elnteh -menilier 3, but. that when abnormal .strain or overload is placed Upon the gears or other driven means the pins l?, will be forced trom the depressions '18 and the'inclined faces of the cani portions l5? of the drivingr olnteh member l5 will ride against the pins and so torce the driving w clutch member l5 away 'from the driven eliitch member 3, snob i'iioveinent being limited by the collar ofthe sleeve Ll, thus per-- mitting the driving pulley 5, as hereinbetore sta-ted, ro run idle. The sgi-ings 3l eontrob ling the action of the pins or plungers i2 are heldin place by means of screws 32, by means of which the tension ot tl e springs may be readily adjusted as may be desired.

elaim as my inve-fion:

vl. An overload clutch comprising n driven ineens/i forced' avvay from its companion clutch member. l A

2. An overload clutch ooinprisinga driven' clutch member, a driving clnteh member adapted to eoz'perate with the .driven clutch member and shittable toward and from the same, driving means, spring actuated means `carried thereby 'for engaglng said driving clutch member to rotate the same, and means Carried by said driving'elnteh member' and cooperating with said spring actuated means whereby on an overload the driving Clutch member Will be forced aivay from the driven clutch member.

3. An overload clutch comprising a driven clutch member, a driving clutch member adapted to eoi'iperate therewith and sbiftable 'toward and tromthe same, driving means, a spring actuated pin or pins carried by said driving means for engaging said driving clnteh member to rotate the saine, and means carried by said driving `clutch member and eoperatiiw with said 'pin or pins whereby on an overload the driving clutch member will be oreed avvay from the driven clnteh member.

il. fin overload clutch comprising a shaft, a driven eluteh member vloos-ely mounted thereon, a driving clutch member adapted to Cooperate with the driven oliitchmember and shiictable toward and from the saine, driving means, spring actuated pins carried by said driving means for engaging said driving clutch member to rotate the same, cams carried by said driving clutch member and coi'perating with said pins 'whereby on an overlofd the driving clutch member will be forced away from the driven clutch member.

An overload Clutch comprising a shaft,

a driven clutch member loosely mountedl thereon driving clutch member adapted to cooperate with the driven clutch memberl driven Clutch member, a pair of oppositelyi',

disposed spring aeinated pins for engaging said driving eiiiten member. to rotate tine same, earns; carried by said driving clutch member and -eoperating with saidv pins' whereby on an overload the driving clutch member will be 'forced away from the' driven clutch member.

l ian overload clutch comprising e shaft, a driven clutch member loosely-,mounted thereon, means fastened thereto `and driven leo 5 cam surfaces communicating therewith','a

driving pulley mounted on saidv driven clutch member, spring actuated pins carried by said driving -pulley and adapted to project into said depressions and toben-engaged by 'said 'cam surfaces whereby on an overload the driving -clutch member -will befrom the driven clutch memy forced away ber. a

47. An overload clutch comprising aV shaft, ra driven' clutch member loosely mounted thereon, means connected therewith and driven thereby, a driving clutch member roi tatably supported onthe shaft and shiftable toward and from the drivenclutch member and having depressions and cam surfaces communicating with the depressions, a driving pulley 4loosely mounted on said driven clutch memler, spring actuated pins carried by said driving pulley and adapted to project into the depressions of the driving clutch member and to be engaged bythe 'cam surfaces thereof' whereby on an overloadthe driving clutch' member ,will be forced away from the driven clutch member.

a driven clutch member loosely mounted thereon, means connected therewith and driven thereby, a driving clutch member rotatably supported on the shaft and shiftable toward and' from the driven clutch member and having depressions and cam surfaces communicating with the depressions, a driving-pulley lopsely mounted on said driven clutch member, spring actuated pins carried jectl into the ldepressions of the driving .load the driving clutch member will. be forced away from the driven clutch member, and'means carried ,by said shaft to enable the same to be turned directly.

9. An overload clutch comprising a shaft, a driven clutch' member loosely mounted thereon, means `connected therewith and driven thereby, a driving clutch member rotatably supported. on the shaft and sbiftable toward and from the driven clutch member and having depressions and cam surfaces communicating with the depressions, a driving pulley loosely mounted on said drivenclutch member, s'pring actuated pins carried by said driving pulley and adapted to project into the depressions of the driving clutch member and to'be engaged by the cam surfaces thereof whereby on an overload the driving clutch member will be forced a'way from the driven clutch member, and means'carried by said shaft to en- 35 able the same to be turned directly, said -8. An overload clutch comprising a shaft,

by said driving pulley and adapted .to pro-y means comprising a sleeve fastened to the'.

shaft and on which'the driving clutch member rotates. l

10. An. overload clutch comprising a shafti a driven clutch member loosely mounte thereon, a driving pulley mounted onsa'id driven clutch'member', a sleeve fastenedto said shaftaa driving clutch lmember rot`atable on said sleeve, spring actuated means carried by said driving pulley and effective t to engage the driving clutch member t'o ros tate the same, and means carried by said Idriving clutch member for engagmg with saidjspring actuated means .whereby on, an overloadV the driving clutch member Vwill, be forced away from the driven clutch member.

l1. An overload clutch comprising a driven clutch member, a driving clutch member adapted to coperate with the driven clutch member and shiftable toward and from the same, a pulley loosely mounted on the driven clutch member and overhanging the driving clutch member, means car.

with said means, wherebyV on an overload the driving clutch member will be. forced away from the driven clutch member.

12;? An overload clutch comprisingv a shaft, a driven clutch member loosely mounted thereon,. means fastened thereto and driven thereby', a. driving clutch member adaptedto coperate with the driven clutch member and shiftable toward and from the same and rotatable' relatively vto said shaft, a driving pulley mounted on said drivenclutch member and overhanging the driving clutch member, spring actuated 'pins supported on the face of said driving pulley, said driving clutch member having depressions for the recept-ion of s aid. pins and also having 'cam surfaces adapted to co.

operate with the pins, whereby on an ove`r= load the driving clutch member will be forced away from the driven clutch member.

13. An' overload .clutch comprising 'a f-d'ri-ven clutch member, a driving clutch mem-A ber adapted to coperate therewith. and lshift'able toward and from the same, a. driving ulley, said pulley and drivin clutch inem er having one spring actuate projections and the other depressions for the receptioh thereof, whereby motion is imparted from the pulley to. the driving clutch member, said' driving pulley and driving clutch member also having one means for engag-4 ing said projections, whereby on an overload the driving clutch member will be forced away from the driven clutch member.

14.4 Anv overload clutch comprising a shaft, a driven clutch member loosely mounted thereon, a driving clutch member adapted to coperate with the driven clutch lac depressions for the reception of said projec' tions and said pulley and driving clutch member also having "one cam surfaces for engaging said projections, whereby on an overload the driving clutch member will be forced away from 'the driven clutch member.

15. An overload clutch comprising a shaft, a driven Aclutch member loosely mounted thereon, a driving clutch memben adaptedv to eoperate with the driven clutch member and shiftable toward and 'from thesame, a driving pulley, said driving pulley and driving clutch member having one spring actuated projections and the other dej'xressions for the reception of said projections and 4rsaid pulley and driving clutchmember also having one cam surfaces for engaging said projections, whereby on an overload the driving olutch'member will be forced awayr from the driven .clutch member, said projections being located trans,- versely to' the axis of the shaft.

16. [in overload clutch comprising a shaft, a driven clutch member loosely mountedthereon, a driving clutch memberv adapted to coperate With the driven clutch member and shiftable towardjand from the seme, a driving pulley, said driving pulley and driving clutch member having one spring actuated projections and the other depressions tor the reception of said projections and said pulley and driving clutch member also having one cam surfaces for engaging said projections, whereby on an overload the driving clutch memberfwill be forced away from the driven clutch vmember, said projections being located transversely to the axiso the shaft, and means be turned directly.

17. An overload lclutch comprising a shaft, a Idriven 'clutch member loosely mounted thereon, a driving pulley loosely mounted on said clutch member, a driving clutch member rotatable relatively to said shaft and shiftable 'toward end from the driven clutch member and having depressions therein and also provided with' cam faces, and spring actuated pins carried by carriedv bv the `shaft to enable the shaft to said driving pulley for movement transversely to the axis of the shaft and adapted f to engage said depressions and on an overload to be engaged bysaid cam faces thereby to shift the driving clutch member from the driven clutch member. v

18. An overload clutch comprising a shaft, a driven clutch 'member loosely mounted thereon, a driving mounted on said clutch mem er, a driving clutch member rotatable relatively to said shaft yand shiftable toward and from 'the driven clutch memberand having depresu lley loosely sions therein and also provided with cam faces, spring actuatedV pins carried bysaid driving pulley for movement transversely to the axis of the shaft and adapted to en gagesaid depressions and on an overload to be engaged by said cam faces thereby to shift the driving clutch member away from the driven clutch member, and means secured to said shaft and on which the driving clutch member is mounted to enable the shaft to he turned. wil',

Signed at Cleveland, county of Cuyahoga FREDERICK l. GLSH.

and State ol Ohio, this 1st day of August, I 

